MHT CET202313 May 2023Evening ShiftPhysicsMechanical Properties of FluidsActual
If work done in blowing a soap bubble of volume ' V ' is W then the work done in blowing the bubble of volume 2 ~V from same soap solution is
Options
- AW 2
- B2 ~W
- C(2)^ 1 3 ~W
- D(4)^ 1 3 ~W
Correct answer
D. (4)^ 1 3 ~W
Step-by-step solution
The work done is given as W = T A Volume of sphere is V = 4 3 r ^3 Area of sphere is A =4 r ^2 A V ^ 2 3 W V ^ 2 3 W ^ W = V ^ 2 3 ~V ^ 2 3 W ^ W = (2 ~V )^ 2 3 ~V ^ 2 3 .( V =2 ~V ) W ^ W =2^ 2 3 =4^ 1 3 W ^ =4^ 1 3 ~W